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Auteur (up) Kaplan, D.; Halle, C.; Paduan, J.; Largier, J.L. doi  openurl
  Titre Surface currents during anomalous upwelling seasons off central California Type Article scientifique
  Année 2009 Publication Revue Abrégée Journal of Geophysical Research  
  Volume Numéro Pages  
  Résumé An extensive spatio-temporal surface currents dataset from central California, USA is

used to examine in detail two extreme years in the California Current. 2006 is

characterized by an extended period of calm winds during the critical early months of the

upwelling season (April, May). This lead to little or no upwelling over this period,

essentially delaying the onset of the upwelling season. 2007 is characterized by

extremely strong alongshore wind stress during the first quarter of the year and during the

early part of the upwelling season. This produced monthly-mean alongshore current

velocities over the mid-shelf for April 2007 in excess of 0.7 m s-1, which has not been

previously observed in this region for periods of more than a few days since the

installation of the HF radar instruments in 2001. Both of these extremes appear to have

had important consequences for the coastal ecosystem that have been documented

elsewhere, including the collapse of parts of the trophic web (2006) and the presence of

large quantities of water of deep origin over the continental shelf (2007). Understanding

and describing circulation and transport patterns during these extremes is important in

light of predictions from global climate change, which may cause these extreme

conditions to occur more frequently.
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  Numéro d'Appel LL @ pixluser @ collection 51  
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